/**
 * DTA 後台管理 - 現代專業樣式
 * 適用於後台管理與認證頁面
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --dta-sidebar-bg: #1e293b;
  --dta-sidebar-text: #94a3b8;
  --dta-sidebar-active: #0f172a;
  --dta-sidebar-hover: #334155;
  --dta-accent: #3b82f6;
  --dta-accent-hover: #2563eb;
  --dta-content-bg: #f8fafc;
  --dta-card-bg: #ffffff;
  --dta-border: #e2e8f0;
  --dta-text: #1e293b;
  --dta-text-muted: #64748b;
  --dta-radius: 8px;
  --dta-radius-lg: 12px;
  --dta-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  --dta-shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.08);
  --dta-sidebar-width: 260px;
}

/* ========== 後台主體 ========== */
.dta-backend {
  display: flex;
  min-height: 100vh;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--dta-text);
  background: var(--dta-content-bg);
}

/* ========== 側邊導覽 ========== */
.dta-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--dta-sidebar-width);
  height: 100vh;
  background: var(--dta-sidebar-bg);
  color: var(--dta-sidebar-text);
  display: flex;
  flex-direction: column;
  z-index: 1030;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

/* Desktop: 漢堡選單收合側邊欄 */
@media (min-width: 992px) {
  body.sidebar-collapsed .dta-sidebar {
    transform: translateX(-100%);
    box-shadow: none;
  }
  body.sidebar-collapsed .dta-main {
    margin-left: 0;
  }
}

/* Mobile: 側邊欄預設隱藏，點擊漢堡展開 */
@media (max-width: 991.98px) {
  .dta-sidebar {
    transform: translateX(-100%);
  }
  body:not(.sidebar-collapsed) .dta-sidebar {
    transform: translateX(0);
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.2);
  }
}

.dta-sidebar-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.dta-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: #fff;
  text-decoration: none;
  transition: opacity 0.2s;
}

.dta-brand:hover {
  color: #fff;
  opacity: 0.9;
}

.dta-brand i {
  font-size: 1.5rem;
  color: var(--dta-accent);
}

.dta-nav {
  flex: 1;
  padding: 1rem 0.75rem;
  overflow-y: auto;
}

.dta-nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 1rem;
  color: var(--dta-sidebar-text);
  text-decoration: none;
  border-radius: var(--dta-radius);
  transition: background 0.2s, color 0.2s;
  margin-bottom: 0.25rem;
}

.dta-nav-item:hover {
  background: var(--dta-sidebar-hover);
  color: #fff;
}

.dta-nav-item.active {
  background: var(--dta-sidebar-active);
  color: #fff;
  font-weight: 500;
}

.dta-nav-item i {
  font-size: 1.1rem;
  opacity: 0.9;
}

.dta-nav-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.08);
  margin: 0.75rem 1rem;
}

.dta-nav-group {
  margin-bottom: 0.25rem;
}

.dta-nav-group-toggle {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.625rem 1rem;
  background: none;
  border: none;
  color: var(--dta-sidebar-text);
  font-size: inherit;
  text-align: left;
  cursor: pointer;
  border-radius: var(--dta-radius);
  transition: background 0.2s, color 0.2s;
}

.dta-nav-group-toggle:hover {
  background: var(--dta-sidebar-hover);
  color: #fff;
}

.dta-nav-group-toggle i:first-child {
  font-size: 1.1rem;
  opacity: 0.9;
}

.dta-nav-arrow {
  margin-left: auto;
  font-size: 0.75rem;
  opacity: 0.8;
  transition: transform 0.2s;
}

.dta-nav-arrow.collapsed {
  transform: rotate(-90deg);
}

.dta-nav-group-items {
  /* 不限制高度，讓所有選單項目（含 Logistics SKU）完整顯示 */
  overflow: hidden;
  transition: max-height 0.25s ease;
}

.dta-nav-group-items.collapsed {
  max-height: 0 !important;
}

.dta-nav-group-items .dta-nav-item {
  padding-left: 2.5rem;
}

.dta-sidebar-footer {
  padding: 1rem 0.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.dta-logout-form {
  margin: 0;
}

.dta-logout-btn {
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: inherit;
}

.dta-logout-btn:hover {
  color: #f87171 !important;
}

/* ========== 主內容區 ========== */
.dta-main {
  flex: 1;
  margin-left: var(--dta-sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

@media (max-width: 991.98px) {
  .dta-main {
    margin-left: 0;
  }
}

.dta-header {
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.5rem;
  background: var(--dta-card-bg);
  border-bottom: 1px solid var(--dta-border);
  z-index: 100;
  box-shadow: var(--dta-shadow);
}

.dta-sidebar-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background: var(--dta-content-bg);
  border: 1px solid var(--dta-border);
  border-radius: var(--dta-radius);
  color: var(--dta-text);
  cursor: pointer;
  transition: background 0.2s;
}

.dta-sidebar-toggle:hover {
  background: var(--dta-border);
}

.dta-sidebar-toggle i {
  font-size: 1.25rem;
}

.dta-header-content {
  flex: 1;
}

.dta-page-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
  color: var(--dta-text);
}

.dta-page-subtitle {
  font-size: 0.8125rem;
  color: var(--dta-text-muted);
  margin: 0.25rem 0 0 0;
}

.dta-header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.dta-user-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.75rem;
  background: var(--dta-content-bg);
  border-radius: var(--dta-radius);
  font-size: 0.875rem;
  color: var(--dta-text-muted);
  border: 1px solid var(--dta-border);
  cursor: pointer;
}

.dta-user-badge:hover {
  background: #e2e8f0;
  color: var(--dta-text);
}

.dta-user-badge.dropdown-toggle::after {
  margin-left: 0.5rem;
}

.dta-user-badge i {
  font-size: 1.25rem;
  color: var(--dta-accent);
}

.dta-content {
  flex: 1;
  padding: 1.5rem;
}

/* ========== 卡片與表單 ========== */
.dta-card {
  background: var(--dta-card-bg);
  border-radius: var(--dta-radius-lg);
  box-shadow: var(--dta-shadow);
  border: 1px solid var(--dta-border);
  overflow: hidden;
}

/* 含 dropdown 的卡片需 overflow: visible，否則 dropdown 選單會被裁切 */
.dta-card-dropdown-visible {
  overflow: visible;
}

.dta-card-body {
  padding: 1.5rem;
}

.dta-btn-primary {
  background: var(--dta-accent);
  border-color: var(--dta-accent);
  color: #fff;
}

.dta-btn-primary:hover {
  background: var(--dta-accent-hover);
  border-color: var(--dta-accent-hover);
  color: #fff;
}

/* ========== Flatpickr 日曆（與 DTA 後台風格一致） ========== */
.dta-backend .flatpickr-calendar {
  font-family: inherit;
  background: var(--dta-card-bg);
  border: 1px solid var(--dta-border);
  border-radius: var(--dta-radius-lg);
  box-shadow: var(--dta-shadow-lg);
}

.dta-backend .flatpickr-calendar.arrowTop::before,
.dta-backend .flatpickr-calendar.arrowTop::after {
  border-bottom-color: var(--dta-border);
}

.dta-backend .flatpickr-calendar.arrowTop::after {
  border-bottom-color: var(--dta-card-bg);
}

.dta-backend .flatpickr-months {
  background: transparent;
}

.dta-backend .flatpickr-current-month {
  font-size: 1rem;
  font-weight: 600;
  color: var(--dta-text);
  padding-top: 0.5rem;
}

.dta-backend .flatpickr-monthDropdown-month,
.dta-backend .flatpickr-monthDropdown-months {
  background: var(--dta-card-bg);
  color: var(--dta-text);
  border-radius: var(--dta-radius);
}

.dta-backend .flatpickr-prev-month svg,
.dta-backend .flatpickr-next-month svg {
  fill: var(--dta-text-muted);
  width: 1rem;
  height: 1rem;
}

.dta-backend .flatpickr-prev-month:hover svg,
.dta-backend .flatpickr-next-month:hover svg {
  fill: var(--dta-accent);
}

.dta-backend .flatpickr-weekdays {
  background: transparent;
}

.dta-backend span.flatpickr-weekday {
  color: var(--dta-text-muted);
  font-weight: 600;
  font-size: 0.6875rem;
  letter-spacing: 0.03em;
}

.dta-backend .flatpickr-days {
  border-color: var(--dta-border);
}

.dta-backend .dayContainer {
  padding: 0.25rem;
}

.dta-backend .flatpickr-day {
  color: var(--dta-text);
  border-radius: var(--dta-radius);
  max-width: 2.25rem;
  height: 2.25rem;
  line-height: 2.25rem;
}

.dta-backend .flatpickr-day:hover {
  background: rgba(59, 130, 246, 0.12);
  border-color: transparent;
  color: var(--dta-accent);
}

.dta-backend .flatpickr-day.selected,
.dta-backend .flatpickr-day.selected:hover {
  background: var(--dta-accent);
  border-color: var(--dta-accent);
  color: #fff;
}

.dta-backend .flatpickr-day.today {
  border-color: var(--dta-accent);
  background: rgba(59, 130, 246, 0.08);
  color: var(--dta-accent);
}

.dta-backend .flatpickr-day.today:hover {
  background: rgba(59, 130, 246, 0.18);
  color: var(--dta-accent-hover);
}

.dta-backend .flatpickr-day.flatpickr-disabled,
.dta-backend .flatpickr-day.prevMonthDay,
.dta-backend .flatpickr-day.nextMonthDay {
  color: var(--dta-text-muted);
  opacity: 0.5;
}

.dta-backend .flatpickr-day.flatpickr-disabled:hover {
  background: transparent;
  border-color: transparent;
  color: var(--dta-text-muted);
}

/* 日期輸入區：與表單風格一致 */
.dta-backend .dta-card-body .input-group.input-group-sm .form-control {
  border-radius: var(--dta-radius) 0 0 var(--dta-radius);
  border-color: var(--dta-border);
}

.dta-backend .dta-card-body .input-group.input-group-sm .form-control:focus {
  border-color: var(--dta-accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.dta-backend .dta-card-body .input-group.input-group-sm .btn-outline-secondary {
  border-radius: 0 var(--dta-radius) var(--dta-radius) 0;
  border-color: var(--dta-border);
  color: var(--dta-text-muted);
}

.dta-backend .dta-card-body .input-group.input-group-sm .btn-outline-secondary:hover {
  background: rgba(59, 130, 246, 0.08);
  border-color: var(--dta-accent);
  color: var(--dta-accent);
}

/* ========== 表格 ========== */
.dta-table {
  font-size: 0.875rem;
}

/* 欄位標題：對齊 Logistics SKU Tabulator 樣式（淺灰背景、粗體、大寫） */
.dta-table thead th {
  font-weight: 600;
  color: var(--dta-text-muted);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  padding: 0.875rem 1rem;
  border-bottom: 2px solid var(--dta-border);
  background: linear-gradient(180deg, #f1f5f9 0%, #e2e8f0 100%);
}

.dta-table tbody td {
  padding: 0.75rem 1rem;
  vertical-align: middle;
}

.dta-table tbody tr:hover {
  background: rgba(59, 130, 246, 0.08);
}

/* 當前選定行亮色顯示 */
.dta-table tbody tr.selected,
.dta-table tbody tr.selected:hover {
  background: rgba(59, 130, 246, 0.12) !important;
  box-shadow: inset 3px 0 0 var(--dta-accent);
}

/* 表格底部：對齊 Logistics SKU Tabulator footer 樣式 */
.dta-table-wrapper {
  border: 1px solid var(--dta-border);
  border-radius: var(--dta-radius);
  overflow: hidden;
}

.dta-table-footer {
  background: #f8fafc;
  border-top: 1px solid var(--dta-border);
  padding: 0.75rem 1rem;
  font-size: 0.8125rem;
  color: var(--dta-text-muted);
}

/* 權限設定表格：預設收起 ID 欄 */
.dta-table-permission-settings .dta-col-id {
  display: none;
}

/* ========== Tabulator 覆寫 ========== */
.tabulator {
  font-size: 0.8125rem !important;
  border: none !important;
}

.tabulator-header .tabulator-col {
  background: var(--dta-content-bg) !important;
  border-color: var(--dta-border) !important;
  font-weight: 600 !important;
  color: var(--dta-text-muted) !important;
}

.tabulator-row:hover {
  background: rgba(59, 130, 246, 0.08) !important;
  box-shadow: inset 3px 0 0 var(--dta-accent);
}

.tabulator-row.tabulator-row-even,
.tabulator-row.tabulator-row-odd {
  background: #fff !important;
}

/* ========== Logistics SKU 商業表格 ========== */
/* 快速篩選卡片：標題列 + 收合／關閉按鈕 */
.dta-table-filter .dta-table-filter-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--dta-border);
}

.dta-table-filter.dta-table-filter-collapsed .dta-table-filter-header {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.dta-table-filter-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--dta-text);
  margin-bottom: 0;
}

.dta-table-filter .dta-table-filter-body {
  transition: opacity 0.2s ease;
}

.dta-table-filter.dta-table-filter-collapsed .dta-table-filter-body {
  display: none;
}

.dta-table-filter-actions {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.dta-table-filter-toggle,
.dta-table-filter-close {
  width: 32px;
  height: 32px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--dta-content-bg);
  border: 1px solid var(--dta-border);
  border-radius: var(--dta-radius);
  color: var(--dta-text-muted);
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.dta-table-filter-toggle:hover,
.dta-table-filter-close:hover {
  background: var(--dta-border);
  color: var(--dta-text);
  border-color: var(--dta-border);
}

.dta-table-filter-toggle i,
.dta-table-filter-close i {
  font-size: 1.1rem;
}

.dta-table-card {
  overflow: hidden;
}

.dta-table-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--dta-border);
}

.dta-table-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--dta-text);
  margin: 0;
}

.dta-table-header-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.dta-table-badge {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.25rem 0.75rem;
  background: var(--dta-content-bg);
  color: var(--dta-text-muted);
  border-radius: 999px;
}

.dta-tabulator {
  border-radius: var(--dta-radius);
  overflow: hidden;
}

.dta-tabulator .tabulator-tableholder {
  border: 1px solid var(--dta-border);
  border-radius: var(--dta-radius);
}

.dta-tabulator .tabulator-header {
  background: linear-gradient(180deg, #f1f5f9 0%, #e2e8f0 100%) !important;
  border-bottom: 2px solid var(--dta-border) !important;
}

.dta-tabulator .tabulator-header .tabulator-col {
  padding: 0.875rem 1rem !important;
  text-transform: uppercase !important;
  letter-spacing: 0.05em !important;
  background: transparent !important;
}

.dta-tabulator .tabulator-header .tabulator-col .tabulator-col-content {
  padding: 0 !important;
  font-size: 1.05rem !important;
  font-weight: 600 !important;
}

.dta-tabulator .tabulator-row .tabulator-cell {
  padding: 0.75rem 1rem !important;
  border-color: #f1f5f9 !important;
  vertical-align: middle !important;
  /* 允許滑鼠選取並複製儲存格內容，覆寫 Tabulator 預設的 user-select:none */
  -webkit-user-select: text !important;
  -moz-user-select: text !important;
  -ms-user-select: text !important;
  user-select: text !important;
}

.dta-tabulator .tabulator-row.tabulator-row-even .tabulator-cell {
  background: #fafbfc !important;
}

.dta-tabulator .tabulator-row.tabulator-row-odd .tabulator-cell {
  background: #fff !important;
}

.dta-tabulator .tabulator-row:hover .tabulator-cell {
  background: rgba(59, 130, 246, 0.08) !important;
}

/* 當前選定行亮色顯示 */
.dta-tabulator .tabulator-row.tabulator-selected .tabulator-cell,
.dta-tabulator .tabulator-row.tabulator-selected:hover .tabulator-cell {
  background: rgba(59, 130, 246, 0.12) !important;
}

.dta-tabulator .tabulator-row.tabulator-selected {
  box-shadow: inset 3px 0 0 var(--dta-accent);
}

.dta-link-primary {
  color: var(--dta-accent);
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s;
}

.dta-link-primary:hover {
  color: var(--dta-accent-hover);
  text-decoration: underline;
}

.dta-btn-action {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--dta-accent);
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 6px;
  text-decoration: none;
  transition: all 0.2s;
}

.dta-btn-action:hover {
  color: #fff;
  background: var(--dta-accent);
  border-color: var(--dta-accent);
}

.dta-tabulator .tabulator-footer {
  background: #f8fafc !important;
  border-top: 1px solid var(--dta-border) !important;
  padding: 0.75rem 1rem !important;
}

.dta-tabulator .tabulator-footer .tabulator-paginator {
  flex-wrap: wrap;
  gap: 0.5rem;
}

.dta-tabulator .tabulator-footer .tabulator-page {
  min-width: 2rem;
  padding: 0.35rem 0.6rem;
  font-size: 0.8125rem;
  border-radius: 6px;
  border: 1px solid var(--dta-border);
  background: #fff;
}

.dta-tabulator .tabulator-footer .tabulator-page.active {
  background: var(--dta-accent);
  border-color: var(--dta-accent);
  color: #fff;
}

.dta-tabulator .tabulator-footer .tabulator-pagination-contents {
  font-size: 0.8125rem;
  color: var(--dta-text-muted);
}

.dta-table-filter .form-control {
  border-radius: 6px;
  border-color: var(--dta-border);
}

.dta-table-filter .form-control:focus {
  border-color: var(--dta-accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.dta-table-filter .btn-primary {
  border-radius: 6px;
  font-weight: 500;
}

/* 快速篩選重設按鈕：hover 時轉紅色 */
.dta-table-filter .dta-btn-reset:hover {
  color: #dc3545 !important;
  border-color: #dc3545 !important;
  background-color: rgba(220, 53, 69, 0.08);
}

/* 表格區重新整理按鈕：與主色一致，不搶主按鈕視覺 */
.dta-btn-refresh.btn-outline-primary {
  color: var(--dta-accent);
  border-color: var(--dta-accent);
}
.dta-btn-refresh.btn-outline-primary:hover {
  color: #fff;
  background: var(--dta-accent);
  border-color: var(--dta-accent);
}

/* ========== 認證頁面 ========== */
.dta-auth {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  position: relative;
  overflow: hidden;
}

.dta-auth-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 50%, #1e3a5f 100%);
  z-index: 0;
}

.dta-auth-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 20%, rgba(59, 130, 246, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.dta-auth-container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 420px;
  padding: 2rem;
}

.dta-auth-card {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  border-radius: var(--dta-radius-lg);
  padding: 2rem;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.dta-auth-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--dta-sidebar-bg);
  margin-bottom: 1.5rem;
}

.dta-auth-brand i {
  font-size: 2rem;
  color: var(--dta-accent);
}

.dta-auth-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--dta-text);
  margin-bottom: 1.5rem;
}

.dta-auth-card .form-label {
  font-weight: 500;
  color: var(--dta-text);
}

.dta-auth-card .form-control {
  padding: 0.625rem 0.875rem;
  border-radius: var(--dta-radius);
  border-color: var(--dta-border);
}

.dta-auth-card .form-control:focus {
  border-color: var(--dta-accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.dta-auth-card .btn-primary {
  padding: 0.625rem 1.25rem;
  font-weight: 500;
  border-radius: var(--dta-radius);
  background: var(--dta-accent);
  border-color: var(--dta-accent);
}

.dta-auth-card .btn-primary:hover {
  background: var(--dta-accent-hover);
  border-color: var(--dta-accent-hover);
}

.dta-auth-card .alert {
  border-radius: var(--dta-radius);
}

.dta-auth-footer {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
}

.dta-auth-card a {
  color: var(--dta-accent);
  text-decoration: none;
}

.dta-auth-card a:hover {
  text-decoration: underline;
}

/* ========== 後台功能卡片網格 ========== */
.dta-dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.dta-dashboard-card {
  display: block;
  padding: 1.25rem;
  background: var(--dta-card-bg);
  border-radius: var(--dta-radius-lg);
  border: 1px solid var(--dta-border);
  text-decoration: none;
  color: var(--dta-text);
  transition: all 0.2s;
  box-shadow: var(--dta-shadow);
}

.dta-dashboard-card:hover {
  border-color: var(--dta-accent);
  color: var(--dta-accent);
  box-shadow: var(--dta-shadow-lg);
  transform: translateY(-2px);
}

.dta-dashboard-card i {
  font-size: 1.5rem;
  color: var(--dta-accent);
  margin-bottom: 0.5rem;
}

.dta-dashboard-card span {
  display: block;
  font-weight: 500;
  font-size: 0.9375rem;
}

/* ========== 覆蓋層 ========== */
.dta-sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 1029;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s, visibility 0.25s;
}

@media (min-width: 992px) {
  .dta-sidebar-overlay {
    display: none;
  }
}

.dta-sidebar-overlay.show {
  opacity: 1;
  visibility: visible;
}

/* ========== 工具類 ========== */
.dta-text-muted {
  color: var(--dta-text-muted) !important;
}

.dta-mb-0 { margin-bottom: 0 !important; }